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What is a GMO?

Andrew Pollack had an interesting article in the New York Times yesterday that was ostensibly about companies using various techniques to get around regulations surrounding GMOs.  But, that's not what I think the key point of his article is.  Rather, it emphases exactly how hard it is to define what a "GMO" is and it underscores the lack of precision by opponents of the technology who use the term (and no I'm not referring to the folks shown in the Jimmy Kimmel segment that didn't even know what the acronym stands for).  The article also appropriately raises the issue of the costs and entry barriers that exist with the current regulatory regime (a topic I've previously touched on).  

Here's what I wrote about the definitional difficulties a couple months ago in the Milken Review:   

Genetic engineering involves the transfer of a gene (or multiple genes) from one species to
another through synthetic means. Just because the process occurs in a lab, it doesn’t follow that the resulting seeds couldn’t have been produced by “natural” means. . . . Resistance to certain herbicides, for example, can also be attained, albeit at a slower rate, via traditional plant breeding. Indeed, many strains of rice grown today are conventionally bred to be resistant to herbicides. Traditional plant breeding requires the breeder to find wild or unusual cultivars that display the trait of interest and repeatedly crossbreed them with a commercial variety until getting an offspring that is similar to the original commercial variety yet exhibits the desired trait.

Genetic engineering, by contrast, attempts to speed up the process by moving only those genes of interest into the commercial variety. Sometimes these genes come from wild
variants of the same species (using so-called cisgenic technology) or from entirely different species (using transgenic technology) [Pollack’s NYT article seems to mainly be about gene editing - turning on and off genes already present in a plant]. As the comparison of cisgenic and transgenic technologies suggest, the dividing line between what is and what is not genetically engineered is fuzzy and somewhat arbitrary: Transgenic is often considered genetic engineering, whereas cisgenic is not, despite the fact that both approaches use the same methods and differ only in the origin of the genes transferred.

Some of the unusual cultivars used in aforementioned conventional crossbreeds are created by mutagenesis – that is, exposing seeds to radiation or to chemicals in hopes of random, beneficial, mutations. This approach has been used for more than half a century and is not considered genetic engineering, nor is it regulated as such. In fact, certified organic
seeds can arise from varieties produced via mutagenesis.

Then, later in the same article . . .

Ultimately, it must be recognized that genetically engineered foods are not a single “thing.” To broadly claim that they cause harm lacks precision (not to mention evidence). One needs to tie a specific genetic alteration to a specific type of harm. It is possible to imagine genetic modifications that could trigger allergies (the purely hypothetical example of inserting a peanut gene into corn comes to mind). But most of the commercially used applications on the market today are not of this sort, and new GE crops that were couldn’t pass regulatory muster.

Some plant researchers from UC Davis were quoted in Pollack's article as saying,

the regulatory framework had become “obsolete and an obstacle to the development of new agricultural products.”

2014 Year in Review

Impact of Academic Journals

Dan Rigby, Michael Burton, and I just published an article in the American Journal of Agricultural Economics on the impact of academic journals - as seen through the eyes of the academics who write journal articles.  

Motivating the work is the fact that more emphasis is being placed on the "impact" or our academic work.  This can be see most directly in places like the UK where funding directly follows measures of impact.  At my own University, we have to write annual "impact statements", and it is commonplace in promotion and tenure decisions for candidates to have to document "impact."  One of the most common metrics used to identify impact is the Impact Factor of the journal in which an author's article appears.  This impact factor is calculated by measuring citations to articles published in a journal in the two years following the publication date.  There are many critiques of the use of the Impact Factor, and my own research with Tia Hilmer shows that using the impact factor of a journal to measure the impact of a particular article is potentially misleading: some articles published in low Impact Factor journals receive many more citations than some articles published in high Impact Factor journals.

In our current research, we wanted to know what academics themselves think of the impact of different journals, were "impact" can mean several different things.  We surveyed agricultural and environmental economics who were members of at least one of the seven largest agricultural economics associations throughout the world.   We asked respondents to tell us which (of a set of 23 journals) they thought 1) would "most/least enhance your career progression, whether at your current institution or another at which you would like to work" and 2) "The journal whose papers you think have most/least impact beyond academia (i.e., on policy makers, business community, etc.).”  We compared the journal rankings based on these two measures of impact to each other and to the aforementioned Impact Factor based on citations data. 

We find:

We find no significant correlation between the journal scores based on the two criteria, nor between them and the journals’ impact factors. These results suggest that impact beyond academia is poorly aligned with career incentives and that citation measures reflect poorly, if at all, peers’ esteem of journals.

My favorite part of the paper are a set of graphs Dan put together plotting the various measures of impact against each other.  Here's one showing a journal's Impact Factor vs. respondent's perception of the career impact of publishing in the journal.

Woman A Leading Authority On What Shouldn’t Be In Poor People’s Grocery Carts

Yes, it's from the Onion.  But, as most stories from the Onion, they're funny because they hold a glimmer of truth.

NORTHAMPTON, MA—With her remarkable ability to determine exactly how others should be allocating their limited resources for food, local woman Carol Gaither is considered to be one of the foremost authorities on what poor people should and should not have in their grocery carts, sources said Thursday.

As verified by multiple eyewitness reports from supermarkets across the Northampton area, the real estate agent and mother of three is capable of scanning the contents of any low-income person’s basket and rapidly identifying those items which people like that don’t need to be buying, based on the products’ nutrition and cost. Additionally, Gaither, 48, is widely regarded as a leading expert in determining which groceries they would purchase instead if they had any common sense or restraint.